A screw pump oil production process string
A technology of process pipe string and screw pump, applied in drill pipe, drill pipe, casing and other directions, can solve the problem of high power requirements of oil pump, and achieve the effect of reducing power requirements and reducing resistance
Active Publication Date: 2016-04-27
TOP WELL PETROLEUM TECH COMPANY
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Problems solved by technology
[0003] In order to solve the above technical problems, the present invention discloses a screw pump oil production process string, which solves the problem of high power requirements for oil pumps in heavy oil wells.
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Embodiment
[0016] Such as figure 1 As shown, the embodiment of the present invention discloses a screw pump oil recovery process string, including: comprising: a sucker rod 1 and a screw pump rotor 21 sequentially connected from the ground; The oil pipe 3 extending downward; and the packer 4, the screw pump stator 22 and the anchor 8 connected to the oil pipe 3; wherein, the screw pump rotor 21 and the screw pump stator 22 form the screw pump 2; the oil pipe 3 is provided with The oil pipe 3 is connected with the diversion channel 31 on the outside of the oil pipe 3 , and the diversion channel 31 is located on the upper part of the packer 4 and the screw pump 2 .
[0017] In the embodiment of the present invention, such as figure 1 As shown, the screw pump oil recovery process string of the present invention also includes a casing 5 sleeved outside the oil pipe 3, and an oil jacket annulus 32 is formed between the casing 5 and the oil pipe 3, through which the packer 4 and the screw pum...
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The invention discloses a screw-pump oil production technique pipe. The screw pump oil production technique pipe comprises a sucker rod and a screw pump rotor, the two of which are orderly connected from top to bottom, an oil pipe sleeving the sucker rod and extending downwards, and a packer, a screw pump stator and an anchor which are all connected to an oil pipe, wherein a flow guide channel for enabling the oil pipe to be communicated with the outside of the oil pipe is arranged on the oil pipe and located on the upper portions of the packer and the screw pump. The screw pump oil production technique pipe has the advantages that the channel for the oil pipe to be directly communicated with the outside of the oil pipe is designed on the oil pipe on the upper portions of the packer and the screw pump, oil can be transferred from the oil pipe to an oil sleeve annulus and then raised to the ground surface, and as the open area of the oil sleeve annulus is increased by several times in contrast with that of the oil pipe, the resistance to the oil in the raising process is greatly reduced and the requirement on the power of the oil pump is reduced.
Description
technical field [0001] The invention relates to the technical field of oil recovery in oil fields, in particular to a screw pump oil recovery process string. Background technique [0002] In the prior art, for oil production of heavy oil wells, due to the high viscosity of heavy oil, the lifting resistance is very large. In order to prevent the wear of the outer wall of the sucker rod and the inner wall of the tubing, multiple centralizers are generally designed on the sucker rod, but due to the lifting The resistance in the process of heavy oil is very large, and greater power is required, which requires a higher power for the oil pump. Contents of the invention [0003] In order to solve the above-mentioned technical problems, the invention discloses a screw pump oil production process pipe string, which solves the problem of high power requirements of the oil pump for oil production in heavy oil wells. [0004] According to one aspect of the present invention, there is...
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IPC IPC(8): E21B43/00E21B17/00
Inventor 李宏川兰卫家林仁峰
Owner TOP WELL PETROLEUM TECH COMPANY